Chiang Mai University and The Association of Southeast Asian Institution of Higher Learning, 1990
Buku Referensi
Polytechnic , 1986
Buku Teks
Kasetsart University, 1982
Buku Teks
Association of Southeast Asian Institutions of Higher Learning
ASAIHL, 1977
Buku Referensi
The Association of Southeast Asian Institutons of Higher Learning (ASAIHL)
Gadjah Mada University, 1985
Buku Referensi